Laser Eye Surgery/squint

My daughter has been identified for squintat the age of 2. for the past 3 years we are doing patching for both of her eyes as per doctors suggestion.
She has only intermittent squint. We notice squint once or twice in a day. All other time she will be normal.
Dcotors adviced us to take a surgery if we need.
She is six now.

I want to know whether the surgery can cure her 100% or shall we wait for some more years to go.

I personally am not in favour of any squint surgery below 4 years of age, especially with intermittent squint also you have not mentioned if she has any refractory error or she has been prescribed any eye glasses if yes she needs to wear it continuously, also she needs supplementery treatment kindly do her CBC ESR report and mail to me